/ Thesaurus / D Synonyms of decisiveness Find synonyms for: Noun1. decisiveness, decision, resoluteness, firmness, firmness of purpose, resolve, resolutionusage: the trait of resoluteness as evidenced by firmness of character or purpose; "a man of unusual decisiveness"2. finality, conclusiveness, decisiveness, determinateness, definitenessusage: the quality of being final or definitely settled; "the finality of death"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: blithesome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language